org.apache.cassandra.io.sstable

Interface SSTableId

All Known Implementing Classes:

SequenceBasedSSTableId, UUIDBasedSSTableId

public interface SSTableId

Represents a unique identifier in the sstable descriptor filename. This ensures each sstable file uniqueness for the certain table on a single node. However, new implementations should ensure the uniqueness across the entire cluster. The legacy implementation which does not satisfy cluster-wide uniqueness will be deprecated and eventually removed.

A new implementation must adhere to the following invariants: - Must be locally sortable - that is, the comparison must reflect the comparison of generation times of identifiers generated on the same node - String representation must *not* include the Descriptor.FILENAME_SEPARATOR character, see Descriptor.fromFilenameWithComponent(File) - must be case-insensitive because the sstables can be stored on case-insensitive file system

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static interface	SSTableId.Builder<T extends SSTableId> Builder that can create instances of certain implementation of SSTableId.

Method Summary

Modifier and Type	Method and Description
java.nio.ByteBuffer	asBytes() Creates a byte format of the identifier that can be parsed by SSTableId.Builder.fromBytes(ByteBuffer)
java.lang.String	toString() Creates a String format of the identifier that can be parsed by SSTableId.Builder.fromString(String)

Method Detail

asBytes

java.nio.ByteBuffer asBytes()

Creates a byte format of the identifier that can be parsed by SSTableId.Builder.fromBytes(ByteBuffer)

toString

java.lang.String toString()

Creates a String format of the identifier that can be parsed by SSTableId.Builder.fromString(String)

Must not contain any Descriptor.FILENAME_SEPARATOR character as it is used in the Descriptor see Descriptor.fromFilenameWithComponent(File)

Overrides:

toString in class java.lang.Object